Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1989-05-25
1992-02-18
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528176, 528183, 548217, 548577, C08F 3800, C08F13208, C08G 6300
Patent
active
050895923
ABSTRACT:
A biscyclobutarene monomer is prepared comprising two cyclobutarene moieties bridged by a divalent radical having at least one benzoxazole, benzothiazole or benzimidazole linkage. A reactive biscyclobutarene oligomer is also prepared by reacting a cyclobutarene-carboxylic acid, a diaminodihydroxyarene, diaminodithiolarene or tetraaminoarene and either an aromatic diacid or an aromatic diacid chloride. the monomers and reactive oligomers can be polymerized to form polymers exhibiting outstanding thermooxidative stability at high temperatures for prolonged time periods.
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Harris William J.
Madison Norman L.
Schrock Alan K.
Anderson Harold D.
Enright Charles J.
Mosley T.
The Dow Chemical Company
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